<li>
    <form action="/maa/do" method="post">
        <input type="hidden" name="locale" value="ru"/>
        <input type="hidden" name="action" value="change-locale">
        <input class="btn btn-default navig" type="submit" value="RU"/>
    </form>
</li>
<li>
    <form action="/maa/do" method="post">
        <input type="hidden" name="locale" value="en"/>
        <input type="hidden" name="action" value="change-locale">
        <input class="btn btn-default navig" type="submit" value="EN"/>
    </form>
</li>